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The Cisco® 2-Port Gigabit Ethernet and 2-Port OC-12 Packet-over-SONET (POS) backcards for the Cisco MGX 8800/8900 Series Route Processor Module (RPM) XF (part numbers MGX-2GE and MGX-2OC12POS) are designed for use with the Cisco MGX® 8800 and MGX 8900 Series wide-area edge switches. These backcards are for use with the Cisco MGX 8800/8900 Series MGX-RPM-XF-512 to provide up to OC-24 of bandwidth for IP services in the new world of data networking.

• Efficient, high-performance bandwidth utilization-OC-12 performance of 622 Mbps provides the bandwidth required to meet the most demanding user requirements, such as faster access to Web pages, real-time video, large file transfers, and other data-intensive applications. The Cisco POS implementation offers a 25 to 30 percent gain in efficiency over multiservice IP traffic now running over ATM networks. It achieves this efficiency gain by eliminating the overhead required in ATM implementations, such as ATM cell header, IP-over-ATM encapsulation, and segmentation and reassembly (SAR).

1 LC connectors are manufactured under license from Optical Fiber Systems (formerly Lucent Technologies). The LC is a small form-factor interconnect based on the RJ-45 telephone interface. LC is a fiber duplex connector that has a ferrule size of 1.25 micrometers as compared with the 2.5 micrometers for FC- and SC-type connectors.